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Updates to the program
Calendars, online training, and info for trainers
Exam dates
Exam information
Forms & applications
Download a required form
Next exam date

The next exam day is May 4th, 2016.

The deadline to apply is April 6, 2016.

Exam applications will be available on the Forms Webpage in mid-February.

Contact information
Wastewater Operator Certification
Municipal Waterworks Operator Certification
Small Water System (OTM/NN) Operator Certification
Septage Operator Certification and Septage Business Licenses
Landfill Operator Certification

Operator certification program

Operator certification lookup webpage

Do you need to...

  • View an operator's training history report?
  • Print a wallet card?
  • See which certifications an operator holds?

Attention Wastewater Operators - NR114 Code Revision

The revised Wisconsin Administrative Code NR114 took effect on July 1, 2015. Refer to the NR114 Revisions Webpage for more information on what changed and how your certification converted.

About the program

The operator certification program is established under chapters NR 114 [PDF] and NR 524 [PDF] Wisconsin Administrative Codes.

The program is responsible for ensuring that various types of professional operators have adequate training to perform the necessary tasks at their facilities.

Type of operator certification


Operators of a wastewater treatment facility.

Municipal waterworks

Operators of a community water system that is owned by, or serves, a city, town, village, county or other municipality. Also included in this definition are county or state owned public institutions for congregate care or correction.

Small water system (OTM/NN)

Operators of an "other than municipal" (OTM) community water system or a non-transient non-community (NN) water system. OTM systems serve groups of 25 or more year-round residents; they can include mobile home parks, apartments, condominiums and other facilities. NN systems serve groups of 25 or more people over six months of the year; examples include schools, day care centers, dairies and cheese plants, factories and industrial facilities.


Septage operators service, haul and dispose of domestic waste. Individuals working in this industry are required to obtain proper certification and adhere to chs. NR 113 [PDF] and NR 114 [PDF] Wis. Admin. Codes compliance and regulations. The Operator Certification Program is also responsible for the licensing of septage businesses.


Landfill managers and site operators work at municipal, mixed waste and intermediate size construction and demolition disposal facilities and are subject to certification requirements under ch. NR 524 [PDF] Wis. Admin. Code.


Solid waste incinerator operators work at facilities that burn solid waste.

Last revised: Wednesday November 04 2015